Roasting machine



Dec.1,1925. 4 1,563,157

Y J. LEBERHERR i ROASTING MACHINE Filed Jan. 9, 1923 gFg vgTNEssEs INVENTOR Patented Dec. l, 1925. A I Y I entran; saar-Es Pff-arent centen'.

JAEKOBLIEBER'I'I'ER'IF.A OF `ISLIKQN SWTZEB/LANDi ROASTING MACHINE.

Application file dJanuary 9I 1923, SeriaLNp. 611,636.

To @ZZ whom t may. concern: .iniproved roasting; machine provided with Be it known that I, JAKoB Linnnirmui, a tWol conical feed"ve"ssels, 55 citizen of `Svvitzerland,v residing at ,Islikon, Figs.` 13, and'l:` are respectively sectional Kt. Thurgau, Switzerland, have invented vieivs through'- two roastingcylinders-procertain nevv and usefnl'niproveinents in vided/.With an alternative. form cgt-receiver Roasting Machines, of which the following shfovvir indifferent posi-tions; and

a specification. Figsgl to lSaresect-imial views through 60 Myzinventi'on relates to roastingflnachines the receiver f andits;housing;; on. the line and'has for' its obj ect to pnt -passages" for cfs-(0in Fig.; 13" showing the-for1ner `indiff- 10 special, purposes between the roastingicy'lin- 'ferent' positions.V

ders, inAVhiClrhelical :conveyors.propell the Accordingl to the construction shown in niaterialto the opposite `end-ofthe cylinder. Figs; ,l-ftolOv'of the, drawings-the; inaterial 65 Slidesor' receivers, fitted With inlets and to he, treatechsuch as coifee, oatsolj thelike outlets for-the material,` are connectedrlto is fed;v into thegvesselv 33jand the shaft 5- thejpassages. 75 isinovedfinto-such aposit'ionthatgthe discs Igvvill' nov7 4proceed to more particularly ileavea snfliicientspace Jfor the` said madescriheiny invention With' theaid of'fthe teria-l lto fall` into the` Cylinder 1.Y Helical 70 accompanying drawing; in; which' conveyorslproplelLA the f material 4to the oppo- Figflisa sectionalelevationof'one lforni sitefend*otith'e`v said' cylinder vvhereafteri` it of `the'improved Toasting machine, iallsfthrouglrthe channel linto thevcylin- Fig,1 2' is'za bottom plan view of the dryder 2 whence the-materialis caused in like ing device lshovvlrin Fig; 1,' mannertopass-throughtheother'cyli-nders 75 F 3' isa tranversel sect-ion yon the line and chan-nelsl,17,18fand20'nntil itleaves fly-bin, Fig. l, the last cylinder G* by Wayof the channel Figtis aside elevation of the said-roast- 22' that delivers'it-on to an inclinedperfoing; machine, ratedplate 23* along whichV it is causedto Fig. 5 is a-vew of the. left-hand endtravel bybladesSQcarriedhyendless chains 80 plate of one of the roasting cylinders, QGand 127 Imountedon.cliainvvheels.

Fig. G is a"longitudinal'section through fh; ventilator 25 is providedfto cool the 'one Aend of one o'the roasting; cylinders goods bynieans ofa currentlof air.y

showing 'the helical conveyors mounted oir ai vllhe-roastii'ig `cyli-ndersare heatedby elechollow perforated shaft, trical= coils 76' and any-dust, moisture or S5 F'iigfill'ustrates ainodilication accordi-ng chips inl the cylinders is drawn out bythe to which the shaft on which the helical draftcf-an exhauster, connected; to opening 351 conveyors are niounted isL provided with 44. For ascertaining how far the process stirring plates, of the roasting has -j proceeded,- according to Figs 8" andfQ are respectively transverse Fig. 9 the receiver 72 'isf shiftedfinto the 90 sections through #tivo o-tlie'vroasting cylinchannel 18101'20' of Fig. 1;' A" part of the ders-at the partfcnteredh'y thei-r1co1niecting goodfs Willi?drop-thronghthe channel 'T1 to 40 channel; showing afreceiverlwi-th 'Whichtli'eyx the outside, Where the degree Voi the roasting are'providedin twopositions; can loef-tested It' theroasting is already F ig.. l0 is aA similar section through-two finished ilrfthe cylinder' 2`or= 4; lthe whole 9 roastingcylindcrs showing aconficalfedingq, lnateigialfcan berelnoved through"the` chanvesselandnieans forintroducing the ma nell 713 shown inFli'gr 8.# Iirth-iscasethc terial to be treated into the channel connectcylinders 5, 6 could be used for roasting aning the two cylinders, other part of the same material. For this Fig. 11 is a partial 'sectional elevation of purpose the arrangement shown in Fig. 10 100 another forni of the improved roasting mais employed according to which the veschine provided with a friction gearjfor sel 69 with-the helical conveyor 7 0 is fixed driving the helical conveyors, atdil'erent to the channel 21 and the new material is speed, forced into the cylinder 5. If the cylin- Fig. lf2 Vis a part sectional Side elevation ders are lilled up too high, a hollow shaft 105 of the upper part of another forni otr-'the 47, shown in Fig, .6, Iis einployedthrough which the moisture and dust can be removed by the draft of the exhauster. If the screw blades are not able to stir the material suiiiciently, special stirring blades 48, shown 1n Fig. 7 are provided.

When the apparatus is intended totreat at the same time different materials that require different times for roasting, the arrangement shown in Figs. 11 to 18 may be employed.

According to this construction two separate vessels 50, 55 with helical conveyors a-re p ut on top of the roaster. The conveyors are driven by the friction discs 51, 53 and 56, 57. The vessel delivers the material to the roasting cylinders at the top and the vessel to the cylinders at thev bottom. The channels between the roasting cylinders are arranged like the channels 18, 19, 20 and 21 in Fig. 1. The channel 2O is provided with a slide 62 that can be turned and has a slot 68 and a groove 65. The pipe 61 connects the slide 62 with the vessel 55.

The different positions of the slide are shown in the Figs. 12 to 18. The helical conveyors in Vthe roasting cylinders are driven by friction discs 52, 54 with different speeds. The chain gearing 58, 59 is driven by a pulley 60, as is shown in Fig. 12. This pulley is driven lby any electrical -or mechanical source. By shifting the discs k.53, 54 towards or away from the centre of the discs 51, 52 the speed of the corresponding conveyor will be changed. The chain drive of the different screws is just the saine as in Fig. 1. The chainwheel 9 inFig. 11 corresponds with chainwheel 9 in Fig. 1 and chainwheel 10@L with 10 in Fig. 1. In Fig. 1 six cylinders are used and in the construction illustratedby Fig; 11 five of which only two cylinders are shown. In Fig. 12 only cylinders, 63, 64 are shown, while the others are omitted. The conveyors inthe cylinders shown in Fig. 1 are composed of different plates but those shown in Fig. 11 are made from one piece.y

The arrangement illustrated by Figs. 11 to 18 works in the vfollowing way.

Vessel 5() may be filled up with flour and The flour falls into the vessel 55 with oats. the upper roasting cylinders and the oats into the lower ones. The position of the slide 62 is shown in Figs. 12 and 17.

The flour is taken out after roasting through channels 18 and spout 1 9 (Fig. 1).

This slide 62 is shown in Fig. 12 in the channels 18, 19 but its position should be that shown in Figs. 14 and 16. The oats are delivered through the channel 22 on to the perforated plate 23.

Vhen coffee is roasted all the cylinders must be used. In this case the position of the slide 62 is shown in Figs 13 and When the degree of roasting is to be tested, the slide 62 is turned into the position shown in Figs. 14 and 18 for a moment so that a small. quantity of the material may be taken out. Immediately afterwards the slide 62 is turned back to its old position and the coffee passes through the remaining cylinders and leaves the last through the channel 22.

Having now particularly described and ascertained `the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is: y

1. In a roasting device the combination of several Vroasting cylinders, helical conveyers rotating in the cylinders, arrangement for changing the speed of the helical conveyers, passage between the roasting` cylinders, means inserted in such passages and which may be used either as an inlet or an outlet for material. Y

2. In a roasting device the combination of several roasting cylinders, surrounded by y electric heating coils, set in briclnhelical conveyers rotating in the cylinders, arrangement for changing the speed of the helical conveyers, passages between the roasting kcylinders connecting alternate ends of said cylinders, means inserted in such passages and which may be used either as an inlet or an outlet for material.

3. In a roasting device the combination of several roasting cylinders, surrounded byA electric lheating coils set in brick, helical conveyers rotating in the cylinders, arrange ment for changing the speed of the helical conveyers, passages between the roasting cylinders connecting alternate ends of said cylinders, means inserted in such passages and which rmay be used either as an inlet or an outlet for material, an inclined per- -forated plate on to which the material.

treated is delivered and means for causing l a current of air to pass through said perforations.

In testimony whereof I aHiX my signature.

JAKOB LIEBERHERR. 

